Part 1 I D I L----J II I A virtual machine I I operator logs on I II , Virtual machine extended I control status is: , CP assist on, I virt. mach. assist off, , expanded virtual machine I assist off, I virtual interval timer, assist off , 1 II ,
Because no VM/370 ECPS I functions are on, an I error message is dis- I played if the virtual I machine operator issues I SET ASSIST TMR or SET I ASSIST ON I r--- I The system operator must issue I SET SASSIST ON and SET CPASSIST ON I to enable all the V8/370 ECPS I functions L---- Figure 27. Hardware Assist Relationships (Part 3 of 4) 1-414 IBM VM/310 System Logic and Problem Determination--Volume 1

Part i 1 F I L---.I II A virtual
operator logs on
,
machine 1 I 11-------1 G 1 .- Virtual machine ECPS status is:
exp. virt. mach. assist
on,
virt. mach. assist on,
virtual interval timer
assist on II 1 Virtual machine operator I aay issue the following 1 commands: I SET ASSIST OFF 1 SET ASSIST NOTKR 1 SET ASSIST OFF NOTKR II L---.I • Virtual machine operator 1-------------------------------------------,
issues SET ASSIST OFF I II Virtual machine operator
issues SET ASSIST NOTKR II II Virtual machine operator
issues SET ASSIST OFF NOTKR II Results:
exp. virt. mach. assist
off,
virt. machine assist off,
virt. intvl. timer assist
off Virtual machine
operator issues
SET ASSIST ON .-. I H I L---J Part 4
Results:
exp. virt. mach. assist on,
virt. mach. assist
on,
virt. timer
assist off Virtual machine operator issues SET ASSIST TKR , I I G 1 L---.I Part 4
, Virtual machine I operator issues 1 SET ASSIST ON TKR I r---1 I G I L---J Part 4
Figure 27. Hardware Assist Relationships (Part 4 of 4)
,
Results: I -----------------1
exp. virt. mach. I assist off, I virtual machine I assist off, I virtual interval I timer assist off I i Virtual machine I operator issues I SET ASSIST ON TKRI r---1 I G I L---.I Part 4
Appendix A: VM/370 Extended Control-Program Support 1-415